Amazon will indeed open up more bookstores, but it also plans to
eventually unveil other types of retail stores in addition to
bookstores, according to two sources familiar with the plans.
It’s not yet clear what those stores will sell or how they will be
formatted, but the retail team’s mission is to reimagine what
shopping in a physical store would be like if you merged the best
of physical retail with the best of Amazon.

So they’ll start with books, then expand to other products. Sounds familiar.